Beneficiation method for separating fluorite and tungsten through flotation

A fluorite and flotation technology, applied in flotation, solid separation, etc., can solve the problems of low flotation recovery rate, complicated process, and difficult fluorite flotation, so as to ensure the recovery rate of fluorite, clean and environmentally friendly process, Effect of High Fluorspar Recovery Rate

Active Publication Date: 2014-10-08
HUNAN SHIZHUYUAN NON FERROUS METAL +1
View PDF6 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]1) Under the conditions of high alkaline pH value and adding a large amount of water glass, the scheelite is preferentially flotation, and the fluorite is strongly inhibited, so that the subsequent fluorite flotation It becomes extremely difficult; at the same time, in the process of preferential flotation of tungsten, a part of fluorite with better floatability is lost during tungsten flotation, and the recovery rate of fluorite is difficult to improve
[0005]2) When floating tungsten tailings for fluorite flotation, it is necessary to add a large amount of acid and activator to adjust the pH value of the slurry to activate the suppressed fluorite minerals At the same time, some gangue minerals are activated, making it difficult to improve the quality of fluorite flotation concentrate
[0006]3) The process of fluorite beneficiation is complicated, multiple beneficiation is required, and tailings must be discharged twice during the beneficiation p

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Give mine one. Fluorite priority flotation undergoes one roughing, one sweeping and five beneficiation to obtain fluorite concentrate, and the ore sequence in each operation returns to the previous operation. Add some hydrochloric acid to the rough separation of fluorite to control the pH value to 6.5; add inhibitor water glass or acid water glass to 300-1500 g / ton, starch dosage 300-800 g / ton, stir for 5 minutes; add collector modified oil Acid 800-1500g / ton g / ton, stirring for 2 minutes; add hydrochloric acid to control the pH value of 6.5, water glass or acid water glass 50-500 g / ton, starch 50- 400g / ton; add some hydrochloric acid to control the pH value to 6.5, water glass or acid water glass 200-400g / ton, starch dosage 200-400g / ton, add collector modified oleic acid 100- 300 g / t.

[0051] Then carry out scheelite (a small amount black tungsten) flotation roughing on the above fluorite flotation tailings, add regulator sodium carbonate 1000-2000 g / ton; inhibitor ...

Embodiment 2

[0054] The difference between the second embodiment and the first embodiment is that the ore feeder 2 is used as the ore feeder for flotation. Fluorite priority flotation undergoes one roughing, one sweeping and seven beneficiation to obtain fluorite concentrate, and the ore in each operation returns to the previous operation in sequence. Fluorite roughing, sweeping, and seven additions of selected agents, and pH control are the same as in Example 1.

[0055] The fluorite flotation tailings are subjected to mixed flotation of black and white tungsten, and regulators, inhibitors, activators, and collectors are added to the ore respectively. The types and contents of the agents are the same as those in Example 1. After one roughing, three times sweeping and three times beneficiation, black and scheelite mixed coarse concentrate products are obtained.

[0056] Obtain mineral processing index: fluorite concentrate contains CaF 2 90.35%, including WO 3 0.10%, the recovery rate...

Embodiment 3

[0058] The difference between the third embodiment and the second embodiment is that the fluorite concentrate in the second embodiment is further subjected to strong magnetic separation, and the grade of the fluorite concentrate is improved after the magnetic separation, and the tungsten content in the fluorite concentrate is reduced.

[0059] Obtain mineral processing index: fluorite concentrate contains CaF 2 93.91%, including WO 3 0.08%, the recovery rate of raw ore fluorite is 50.7%; 3 2.59%, the recovery rate is 83.57%.

[0060] Embodiment one Compared with the current conventional flotation for the same ore feed, the recovery rates of tungsten and fluorite are increased by 4% and 39-48% respectively, the grade of tungsten coarse concentrate is equivalent, and the grade of fluorite concentrate is increased by 3%-16%.

[0061] Embodiment two Compared with the current production flotation index of the same ore, the recovery rate of fluorite is increased by 11.0%, an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a beneficiation method for separating fluorite, white tungsten (black tungsten) and gangue minerals in complex polymetallic ore through flotation. Non-magnetic products of tailings subjected to sulphide ore flotation or tailings subjected to sulphide ore flotation and then subjected to strong magnetic separation for recycling black tungsten serve as two kinds of samples. The pH value is controlled by adding regulators, white tungsten, black tungsten, other gangue combined inhibitors and collectors are added, fluorite is subjected to differential flotation, then, tungsten minerals are subjected to flotation, and therefore fluorite and tungsten can be efficiently recycled. Loss of fluorite in tungsten flotation concentrate is avoided when tungsten minerals are subjected to differential flotation, and the defect that when tungsten flotation is performed, fluorite is difficult to recycle through flotation because the inhibitors have strong inhibition on fluorite, and beneficiation efficiency is low is avoided. Compared with a current beneficiation situation, the fluorite recycling rates of tests on the two different samples are increased by 39% to 48 % and 9% respectively, and the tungsten recycling efficiency is improved by 3%.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a calcium-containing gangue such as fluorite, scheelite, calcite, garnet, etc. Mineral separation and comprehensive recovery beneficiation method. Background technique [0002] Fluorite and scheelite have similar surface electrical properties and flotation behavior, so the flotation separation between them is very difficult, and complex polymetallic ores also contain calcium-containing gangue minerals such as calcite, so fluorite and tungsten Flotation separation of calcium-containing gangue minerals such as fluorite and calcite is more difficult, and its separation technology is still the bottleneck restricting the efficient recovery of fluorite and scheelite, and it is one of the worldwide problems in the field of mineral processing. In the past, in the mineral processing recovery production and scientific research of minerals containing fluorite and scheelite, the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B03D1/018
Inventor 朱一民李晓东周菁陈玉林潘高产谢加文周燕红张适合
Owner HUNAN SHIZHUYUAN NON FERROUS METAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap